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Yes, you can use one of the three phase service lines to run the single phase device. However, before you connect it, you must first make sure that both the voltage and the current rating of the device will be suitable for the single phase service that your new connections to the service wiring will produce.
The single phase voltage you will get between any one phase line and the neutral point is less than the voltage between any two of the three phase service lines by a factor of 1/1.73. So, because 415/1.73 is about 240, a 415V 3-phase service will produce a single phase voltage of 240V.
If you are in one of the many countries which use split single phase wiring - such as USA and Canada - that 240V will actually be available as two 120V "hots" (usually with red and black colored insulation) balanced about the neutral point i.e. +120V / Neutral / -120V.
Thus you can actually connect up a new branch circuit either for one 240V single phase device or two 120V branch circuits to supply power to 120V devices.
After you have made sure that the current demanded by your single phase device can be supplied by the available 3-phase service, it is vital that you make sure you install the correct size of circuit breaker (voltage and ampacity) and branch circuit wiring having the correct wire size to carry the current load drawn by the single phase device, together with the correct types and sizes of socket outlets. All these details are specified in your country's national electrical codes or regulations.
(1.73 is the square root of 3).
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoYes.
A three-phase, three-wire, system supplies energy using three line conductors; a three-phase, four-wire, system supplies energy using three line conductors and a neutral conductor. A single-phase supply can be obtained between any two line conductors, or between a line conductor and the neutral conductor -the choice depends on the voltage required.
Wiki User
∙ 10y agoSingle phase from three phase.
There are many three phase installations going into into apartment buildings these days (120/208). A single phase load (say a range) is rated to take 208 volts from a 2 pole 40 amp breaker. This 208 volts is considered a single phase load even though it is coming from a three phase distribution panel. Even though the phase legs are 120 degrees apart the range does not know that and just sees the voltage as 208 and that is what it needs to operate.
Three phase power can be split into single phase power. A three phase transformer has three sets of coils that are connected internally together. The terminal points are L1, L2 and L3. By using any two of these three terminal points a single phase voltage can be obtained. An example, you have an electric heater that requires 600 single phase voltage to operate. All that was available was a three phase 600 volt service supply. The connection would be L1 and L2 = 600 volts, or L2 and L3 = 600 volts, or L3 and L1 = 600 volts. These single voltages from a three phase transformer, in electrical terms, are classed as single phase supplies.
Wiki User
∙ 15y agoIf you mean mains or power electricity that is not possible. The counterpart is missing.
Wiki User
∙ 11y agoNo, a 3 phase heater can not be out of phase.
Wiki User
∙ 12y agoYes, very easily. In fact any two legs of a three phase system is classed as a single phase.
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What is the difference between a one phase and a three phase motor. And if a three phase motor is given a single phase supply will it run or not?
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
Can you convert a single phase power supply into a three phase stabiliser to power a home?
Houses generally run on single phase power. It would not make sense to convert single phase to three phase to run a house. Please restate the question.
What is the minimum voltage a 115vac 400hz 3 phase motor will run?
Yes the minimum voltage of an 115vac 400 Hz 3 phase motor will run. You can run a single phase motor on a three service but you cannot be run on a single phase.
How many single phase can you run on a 100amp 3 phase?
You can divide a three phase service into (3) single phase circuits providing you have a 4th neutral wire.
Why is it called single phasing?
On a three phase system you have incorporated into it a potential of three single phase systems. A-B, B-C, C-A. Any two legs of a three phase system can be used as a single phase load. On a three phase system, be it a motor or a service, if one of the legs drops out for what ever reason, the remaining two legs are known as single phase. This is how the terminology became single phasing. As a side note a motor will run in a single phase condition, it just will not start. In motor control, a single phase condition is prevented by the use of overload heaters on all three voltage legs.
What is the difference between a one phase and a three phase motor. And if a three phase motor is given a single phase supply will it run or not?
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
Can you convert a single phase power supply into a three phase stabiliser to power a home?
Houses generally run on single phase power. It would not make sense to convert single phase to three phase to run a house. Please restate the question.
What is the minimum voltage a 115vac 400hz 3 phase motor will run?
Yes the minimum voltage of an 115vac 400 Hz 3 phase motor will run. You can run a single phase motor on a three service but you cannot be run on a single phase.
How many single phase can you run on a 100amp 3 phase?
You can divide a three phase service into (3) single phase circuits providing you have a 4th neutral wire.
Does single phase power damage air conditioners?
If the air conditioner is designed for three phase, then it will not run, and could be damaged, by single phase power. Otherwise, no.
Single phase and three phase circuit?
Yes, there is a difference between single phase and three phase circuits.
Why would three phase be used instead of single phase?
Three phase electricity is used instead of single phase for industrial situations. Industries use three phase electricity instead of single phase to operate electric motors driving heavy machinery. Three phase electrical motors produce more power from the same amount of electricity and maintain steadier speed. Small portable motors such as drills and mixers use single phase. Motors used around the house are single phase. Motors used to run large industrial machines use three phase.
Two phase instruments?
There is no such thing as a two phase instrument. There is only single phase and three phase. You can only have: single phase/ one pole single phase/ two pole three phase/ three pole
Why is it called single phasing?
On a three phase system you have incorporated into it a potential of three single phase systems. A-B, B-C, C-A. Any two legs of a three phase system can be used as a single phase load. On a three phase system, be it a motor or a service, if one of the legs drops out for what ever reason, the remaining two legs are known as single phase. This is how the terminology became single phasing. As a side note a motor will run in a single phase condition, it just will not start. In motor control, a single phase condition is prevented by the use of overload heaters on all three voltage legs.
You have one hp three phase motor where as available power supply is only single phase how can you run this motor?
You will need to install a phase converter or change the motor to single phase. You can find a licensed electrician at www.contraxtor.com
What are the three types of phase on its final phase?
single phase, double phase & three phase
What cannot be considered a single phase?
Any load that needs three legs from a three phase system can not be considered single phase. Single phase from a three phase system only needs a connection to two legs.
